Understand how oshidashi dey work
Japan Sumo Association describe oshidashi as winning technique where one or both hands press opponent chest or underarm area to push dem outside di ring. For first-time viewer, di useful detail na di pushing contact. Notice how di hands, moving bodies and boundary relate. You dey try recognise di technique for demonstration or match, no be learn physical method from one short paragraph.
Understand how yorikiri dey work
Yorikiri description different: di wrestler move forward or sideways while keeping close body contact, then force di opponent outside di ring. That closeness between di bodies na di main difference to watch. At first, di two finishes fit look alike because both end outside di boundary. Comparing dem teach you to look at wetin happen before di last step, and give you more exact question to ask during guided introduction.
Make di difference useful
For private session, ask whether di instructor fit explain di difference with examples wey suit your programme. Demonstration, observation and visitor participation na separate things, so let di instructor decide wetin suitable to practise. Later, use official technique pages to refresh di words. You no need memorise di whole catalogue before you enjoy sumo. Once you recognise these two ideas, bout don more interesting and you fit appreciate choices wey lead to di finish.